No, i believe it as it happened to me around the same time. Although it did go away a few days after i ended up renewing my silver to a gold to play again. I could play custom games and social. Hell it even allowed me to do the double exp weekend. However when i went into the ranked playist it would give a messege like "this playlist requires an xbox live gold membership" I thought it was permanent but i guess it was just a glitch in the matrix.
^^^ Read the thread. Don't just read the first post. I clearly said. ENJOY... while you can. The free Xbox Gold trial (apparently what this was) has ended. It's not a "glitch", it is just something Microsoft wanted to do.